Lyoto Machida entered the octagon at UFC 140 in Toronto for the biggest fight of his life, as he was standing across from the youngest champion in UFC history.
But Machida appeared fearless of Jon Jones and his 84" reach, as he came out of the gate being the aggressor, pushing Jones up against the cage.
It was the first time we've seen the current champion back peddle, as Machida continued to pressure Jones.
After a right-left combination, Jones began to settle down.
However, Machida's attack continued as he would eventually steal Round 1 as the Canadian crowd couldn't believe what it was witnessing.
But, as expected, Jones came alive in the second frame.
With just around 30 seconds remaining before Round 3, Jones would connect on a standing guillotine choke that would drop Machida to the ground unconscious.
Machida now has many questions to answer after falling short in his highly anticipated championship bout.
Despite a dominant first round, fans have reason to question if Machida's career is heading for the down slope as he's lost three of his last four bouts.
In fact, if Machida wasn't declared victorious in his bout against Mauricio 'Shogun' Rua at UFC 104 in a controversial decision, he would have won just one fight since mid 2009.
Machida must also answer how his inability to fight on the ground will affect the rest of his career.
Machida dominated the first frame by remaining on his feet and exchanging strikes with Jones.
However, that changed when Jones scored a take down and began to pound away at Machida, landing a vicious elbow that opened up a cut on his opponent's forehead.
It appeared Machida was never the same, as Jones would go on to submit him.
In his next bout, Machida needs to prove he's capable of more than choking at the highest stage of mixed martial arts.
In order to become the fighter he once was, Machida will need to evolve a more well-rounded skill set which consists of being able to defend himself from the ground.
If Machida can do this, he'll also prove he remains a legitimate contender in the 205-pound weight class.